Are you saying put the o ring between the bottom inside of the forearm and the small barrel shaped part with the threaded hole in it for the forearm screw? Another firend of mine with a couple #1's altered the forearm length and in the process, eliminated the pressure ridge, it shoots well enough for close in work, but it's not real accurate so free-floating may not be the answer. I think we'll try another scope and different ammo and thanks for the ideas and suggestions, I'll get with some of the Yahoo guys on the number ones and see what they suggest--------John